Southampton Plot

The Southampton Plot was a 1415 conspiracy to replace King Henry V of England with Edmund Mortimer, 5th Earl of March. France financed the conspiracy, which was headed by Richard, Earl of Cambridge, Henry Scrope, Baron Scrope of Masham, and Thomas Grey, with the goal of thwarting King Henry's invasion plans. Mortimer was unwilling to take part in the conspiracy, and he informed King Henry of the plot. The plotters were arrested by Thomas Beaufort, Duke of Exeter at the Red Lion Inn, and they would all be beheaded in August 1415 for their treasonous acts. With the treachery dealt with, King Henry proceeded to embark on his invasion of France.